研究通过在疏水聚偏氟乙烯（PVDF）膜上负载一定量的硫化锌（ZnS）光催化剂进行共混改性，制备ZnS/PVDF复合膜材料，并对其亲水性、催化活性以及催化机理进行探讨。结果表明：添加质量分数6% ZnS的复合膜材料（ZnS/PVDF-3）在亲水性、渗透性、分离性能和抗污染性能方面均表现最优，其纯水通量达到302.5 L/（m²·h），对牛血清蛋白（BSA）的截留率能够达到92.5%。在抗污染性能方面，ZnS/PVDF-3能够达到70.6%的通量恢复率。在光催化降解性能测试中，相比纯PVDF膜，ZnS/PVDF-3也能保持优异的降解效果，其对甲基橙和刚果红染料的降解率分别为90.2%和91.1%。在耐久性测试中，ZnS/PVDF-3表现出优异的循环催化效果和耐酸碱性能，在经历了5次循环之后或者在溶液pH值为2~14的条件下均能够保持75%以上的降解率。研究表明，ZnS/PVDF复合膜材料能够在降解染料废水方面得到广泛应用。

In this study, ZnS/PVDF composite membrane materials were prepared by blending and modifying a certain amount of Zinc sulfide (ZnS) photocatalyst on a hydrophobic polyvinylidene fluoride (PVDF) membrane, and their hydrophilicity, catalytic activity and catalytic mechanism were discussed. The results showed that the composite membrane material with 6% mass fraction of ZnS (ZnS/PVDF-3) had the best performance in terms of hydrophilicity, permeability, separation performance and anti-fouling performance, and its pure water flux could reach 302.5 L/(m²‧h), and the rejection rate of bovine serum protein (BSA) could reach 92.5%. In terms of anti-fouling performance, ZnS/PVDF-3 is able to achieve a flux recovery rate of 70.6%. In the photocatalytic degradation performance test, compared with pure PVDF membranes, ZnS/PVDF-3 can also maintain excellent degradation effects, with degradation rates of 90.2% and 91.1% for methyl orange and Congo red dyes, respectively. In the durability test, the ZnS/PVDF-3 showed excellent cycle catalytic effect and acid and alkali resistance, and the degradation rate of more than 75% could be maintained after five cycles or under the condition of solution pH value of 2~14. The study indicates that ZnS/PVDF composite membrane material can be widely used in degrading dye wastewater.